Use SMAPIv2 VDI.stat for XenAPI VDI.update rather than SMAPIv1 vdi_update

Signed-off-by: Jon Ludlam <jonathan.ludlam@eu.citrix.com>
Annotate the startup tasks with the current operation

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>
Make more dbsync things switched

Signed-off-by: Jon Ludlam <jonathan.ludlam@citrix.com>
examples: add a streaming HTTP export/import example

The example shows how to
  - export by HTTP GET
  - import by HTTP PUT
  - pipe an export into an import with error handling

Signed-off-by: David Scott <dave.scott@citrix.com>
Allow -warn-error to be disabled by configure

Signed-off-by: David Scott <dave.scott@citrix.com>
Merge pull request #1942 from djs55/warn-error

Allow -warn-error to be disabled by configure
Merge pull request #1920 from djs55/exportimport-example

examples: add a streaming HTTP export/import example
Merge pull request #1867 from jonludlam/annotate-startup-tasks

Annotate startup tasks
Merge pull request #1594 from jonludlam/vdi-update

Use SMAPIv2 VDI.stat for XenAPI VDI.update rather than SMAPIv1 vdi_update